Indirect ice and snow thickness measurements were carried out for the winter and spring Antarctic sea ice by using the electromagneticinductive (EMI) device on the East Antarctic pack ice area. This study investigated the effect of saline slush snow layer over the sea ice and seawater-filled gap to the snow and sea ice thickness measured by EMI. A result shows underestimations of EMI thickness, which might be caused by high conductive seawater-filled gaps between ice floes, appeared on thicker ice over 3.5 m. This study improved the validity of applying a multi-rafted ice model for these ice conditions.
Antarctic Remote Ice Sensing Experiment 2003 (ARISE 2003) was conducted in the Antarctic seasonal ice-covered area where is 115–120°E and 64–65°S between September and October of 2003, as a part of Voyage 1 cruse of RSV Aurora Australis. The purpose of the experiment is to validate reliability and accuracy of the satellite passive microwave radiometer; Advanced Microwave Scanning Radiometer (AMSR) and AMSR-E in measuring of sea ice products. We collected ground truth data from the ice floes in order to improve and develop algorithms providing ice concentration, thickness and snow depth. Measurements of ice thickness were carried out by the helicopter-borne, ship-borne and ground-based electromagnetic-inductive (EMI) devices. The authors took part in the ground-based EMI measurements in conjunction with measurements of sea ice thickness, snow depth, surface radiative temperature and salinity of snow and ice. The EMI devices have been used for detecting changes in the earth conductivity, such as underground metal deposits. The EMI sensor measures the terrain conductivity, which is derived from a quadrature component of the ratio of the secondary to the primary electromagnetic field under the operation of the low value of induction number.
